empty bracket with basic angle using dual dimensions

I am making an engineering drawing with dual dimensions. When I set the tolerance to basic on angle dimensions it creates a second empty bracket below the angle. How do I get rid of this or does anybody have a work-around?

he is talking about a box farther down in the property manager called Dual Dimension. which, for me does not show up for angle dims. this may be a bug in the student edition. I don't know how you would go about reporting that.